Several studies has been conducted to study developer sentiments on online discussions (e.g., SO data) [1]}, [2]}, [3]}, [4]}, [5]}, [6]}, [7]}, [8]}, [9]}, [10]}, [11]}, [12]}. Guzman et. al. applied sentiment analysis on code comments [1]}. Islam and Zibran study emotional variations in commit messages [14]}. Garcia et al.  [15]} study the emotions of developers in the Gentoo community. Guzman and Bruegge studied developer sentiments on mailing lists [16]}. Novielli et al. conduct sentiment analysis on SO and Github discussions [17]}. Many of these studies use automated sentiment analysis tools, which are found to provide contradictory results in software engineering research [18]}.
